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Retrieval-augmented generation (RAG) is a powerful paradigm for improving large language models (LLMs) on knowledge-intensive question answering. Graph-based RAG (GraphRAG) leverages entity-relation graphs to support multi-hop reasoning,…

Artificial Intelligence · Computer Science 2025-10-01 Kai Guo , Xinnan Dai , Shenglai Zeng , Harry Shomer , Haoyu Han , Yu Wang , Jiliang Tang

Retrieval-augmented generation (RAG) methods can enhance the performance of LLMs by incorporating retrieved knowledge chunks into the generation process. In general, the retrieval and generation steps usually have different requirements for…

Information Retrieval · Computer Science 2025-04-16 Peiru Yang , Xintian Li , Zhiyang Hu , Jiapeng Wang , Jinhua Yin , Huili Wang , Lizhi He , Shuai Yang , Shangguang Wang , Yongfeng Huang , Tao Qi

Retrieval-Augmented Generation (RAG) enhances the response quality and domain-specific performance of large language models (LLMs) by incorporating external knowledge to combat hallucinations. In recent research, graph structures have been…

Information Retrieval · Computer Science 2025-12-17 Hao Hu , Yifan Feng , Ruoxue Li , Rundong Xue , Xingliang Hou , Zhiqiang Tian , Yue Gao , Shaoyi Du

To address the computational and storage challenges posed by large-scale datasets in deep learning, dataset distillation has been proposed to synthesize a compact dataset that replaces the original while maintaining comparable model…

Machine Learning · Computer Science 2025-10-20 Wenyuan Li , Guang Li , Keisuke Maeda , Takahiro Ogawa , Miki Haseyama

A hyperbolic space has been shown to be more capable of modeling complex networks than a Euclidean space. This paper proposes an explicit update rule along geodesics in a hyperbolic space. The convergence of our algorithm is theoretically…

Machine Learning · Statistics 2018-05-29 Yosuke Enokida , Atsushi Suzuki , Kenji Yamanishi

Hyperbolic machine learning is an emerging field aimed at representing data with a hierarchical structure. However, there is a lack of tools for evaluation and analysis of the resulting hyperbolic data representations. To this end, we…

Standard Retrieval-Augmented Generation (RAG) relies on chunk-based retrieval, whereas GraphRAG advances this approach by graph-based knowledge representation. However, existing graph-based RAG approaches are constrained by binary…

Artificial Intelligence · Computer Science 2025-10-22 Haoran Luo , Haihong E , Guanting Chen , Yandan Zheng , Xiaobao Wu , Yikai Guo , Qika Lin , Yu Feng , Zemin Kuang , Meina Song , Yifan Zhu , Luu Anh Tuan

Retrieval-augmented generation (RAG) has become the standard way to ground large language models in external knowledge, but many systems still organize evidence as flat chunks and retrieve it through largely unstructured search. This weak…

Computation and Language · Computer Science 2026-05-26 Miaohe Niu , Lianlei Shan , Zhengtao Yu , Jingbo Zhu , Tong Xiao

Foundation models pre-trained on massive datasets, including large language models (LLMs), vision-language models (VLMs), and large multimodal models, have demonstrated remarkable success in diverse downstream tasks. However, recent studies…

Machine Learning · Computer Science 2025-07-25 Neil He , Hiren Madhu , Ngoc Bui , Menglin Yang , Rex Ying

Knowledge Graphs (KGs) are ubiquitous structures for information storagein several real-world applications such as web search, e-commerce, social networks, and biology. Querying KGs remains a foundational and challenging problem due to…

Machine Learning · Computer Science 2021-05-14 Nurendra Choudhary , Nikhil Rao , Sumeet Katariya , Karthik Subbian , Chandan K. Reddy

Machine unlearning methods have become increasingly important for selective concept removal in large pre-trained models. While recent work has explored unlearning in Euclidean contrastive vision-language models, the effectiveness of concept…

Computer Vision and Pattern Recognition · Computer Science 2025-04-15 Àlex Pujol Vidal , Sergio Escalera , Kamal Nasrollahi , Thomas B. Moeslund

Hyperbolic representations are effective in modeling knowledge graph data which is prevalently used to facilitate multi-hop reasoning. However, a rigorous and detailed comparison of the two spaces for this task is lacking. In this paper,…

Computation and Language · Computer Science 2025-07-08 Simon Welz , Lucie Flek , Akbar Karimi

Retrieval-Augmented Generation (RAG) has emerged as a powerful approach for grounding Large Language Model (LLM)-based chatbot responses on external knowledge. However, existing RAG studies typically assume well-structured textual sources…

Computation and Language · Computer Science 2026-02-13 Sungmoon Kim , Hyuna Jeon , Dahye Kim , Mingyu Kim , Dong-Kyu Chae , Jiwoong Kim

Data across modalities such as images, text, and graphs often contains hierarchical and relational structures, which are challenging to model within Euclidean geometry. Hyperbolic geometry provides a natural framework for representing such…

Computer Vision and Pattern Recognition · Computer Science 2026-01-28 Haya Alyoussef , Ahmad Bdeir , Diego Coello de Portugal Mecke , Tom Hanika , Niels Landwehr , Lars Schmidt-Thieme

Understanding the intricate mappings between visual stimuli and neural responses is a fundamental challenge in cognitive neuroscience. While current approaches predominantly align images and functional magnetic resonance imaging (fMRI)…

Computer Vision and Pattern Recognition · Computer Science 2026-05-12 Zihan Ma , Tian Xia , Kexin Wang , Xiao Li , Xiaowei He , Yudan Ren

Learning generalizable self-supervised graph representations for downstream tasks is challenging. To this end, Contrastive Learning (CL) has emerged as a leading approach. The embeddings of CL are arranged on a hypersphere where similarity…

Machine Learning · Computer Science 2025-02-25 Yifei Zhang , Hao Zhu , Menglin Yang , Jiahong Liu , Rex Ying , Irwin King , Piotr Koniusz

Retrieval-Augmented Generation (RAG) has become a standard approach for enhancing large language models (LLMs) with external knowledge, mitigating hallucinations, and improving factuality. However, existing systems rely on generating…

Computation and Language · Computer Science 2026-05-08 Ha Lan N. T , Minh-Anh Nguyen , Dung D. Le

Retrieval-Augmented Generation (RAG) enhances language models by retrieving and incorporating relevant external knowledge. However, traditional retrieve-and-generate processes may not be optimized for real-world scenarios, where queries…

Computation and Language · Computer Science 2025-02-28 Ingeol Baek , Hwan Chang , Byeongjeong Kim , Jimin Lee , Hwanhee Lee

Recent progress in artificial intelligence has encouraged numerous attempts to understand and decode human visual system from brain signals. These prior works typically align neural activity independently with semantic and perceptual…

Artificial Intelligence · Computer Science 2026-03-25 Sangmin Jo , Wootaek Jeong , Da-Woon Heo , Yoohwan Hwang , Heung-Il Suk

Large language models (LLMs) achieve optimal utility when their responses are grounded in external knowledge sources. However, real-world documents, such as annual reports, scientific papers, and clinical guidelines, frequently combine…

Information Retrieval · Computer Science 2025-12-17 Chi Zhang , Qiyang Chen , Mengqi Zhang